header {
	height: 1.33rem;
	background-color: #ff841d;
	overflow: hidden;
    display: flex;
	.back {
		margin-top: 0.27rem /* 10/37.5 */;
		display: block;
		width: 0.8rem;
		height: 0.8rem;
		font-size: 0.59rem;
		color: white;
		text-align: center;
		line-height: 0.8rem;
		float: left;
	}
	h4 {
        flex: 1;
        text-align: center;
		color: white;
		height: 0.59rem;
		font-size: 0.53rem;
        margin-top: .27rem /* 10/37.5 */;
		float: left;
	}
	.download {
		float: right;
        width: 1.33rem /* 50/37.5 */;
		img {
			width: 0.91rem;
			height: 0.91rem;
			margin-top: 0.21rem /* 8/37.5 */;
			margin-right: 0.4rem /* 15/37.5 */;
		}
	}
}

main{
    .info{
        width: 7.33rem /* 275/37.5 */;
        margin: 0 0 .53rem .53rem /* 20/37.5 */;
        padding: .27rem .27rem  0 .27rem /* 10/37.5 */;
        overflow-x: hidden;
        li{
            margin: 3px 3px;
            padding: 0 7px;
            height: .93rem /* 35/37.5 */;
            border: 1px solid #ccc;
            line-height: .93rem /* 35/37.5 */;
            text-align: center;
            float: left;
            background-color: #f4f4f4;
            img{
                vertical-align: middle;
                width: .43rem /* 16/37.5 */;
                margin-top: -3px;
            }
            span{
                color: #666;
                font-size: .37rem /* 14/37.5 */;
            }
        }
    }

}